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68998685275 = 5213212303647
BaseRepresentation
bin100000001000010100…
…1000110001001011011
320121002122012101022001
41000100221012021123
52112302130412100
651410401141431
74661565101512
oct1002051061133
9217078171261
1068998685275
1127297a60543
121145762a877
136677b69c30
1434a7a45679
151bdc76ed6a
hex1010a4625b

68998685275 has 12 divisors (see below), whose sum is σ = 92139783232. Its totient is φ = 50952875040.

The previous prime is 68998685233. The next prime is 68998685293. The reversal of 68998685275 is 57258689986.

It is not a de Polignac number, because 68998685275 - 223 = 68990296667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68998685198 and 68998685207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106151499 + ... + 106152148.

Almost surely, 268998685275 is an apocalyptic number.

68998685275 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68998685275 is a deficient number, since it is larger than the sum of its proper divisors (23141097957).

68998685275 is a wasteful number, since it uses less digits than its factorization.

68998685275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212303670 (or 212303665 counting only the distinct ones).

The product of its digits is 522547200, while the sum is 73.

The spelling of 68998685275 in words is "sixty-eight billion, nine hundred ninety-eight million, six hundred eighty-five thousand, two hundred seventy-five".

Divisors: 1 5 13 25 65 325 212303647 1061518235 2759947411 5307591175 13799737055 68998685275